Hello,
A new question has been asked in "MariaDB FAQ" by sagarlotiya. Please answer it at http://mariadb.com/kb/en/mariadb-sorting-issue/ as the person asking the question may not be subscribed to the mailing list. -------------------------------- Hi, I have one table with 4 million rows and other table with 1 million rows. When I perform join on both the table and perform the sort on the column which is not main table it is behaving really slow. I have tested with 8 GB RAM. Whole database fits in memory. I have also checked with EXPLAIN it is not creating temporary table on disk. How can I get best performance? e.g query. SELECT DISTINCT u0_.id AS id_0, a1_.created_at AS created_at_1 FROM user u0_ LEFT JOIN advertise a1_ ON (a1_.user_id = u0_.id) ORDER BY a1_.created_at DESC LIMIT 10; Also note that all the indexes are properly created so that is not he issue here. -------------------------------- To view or answer this question please visit: http://mariadb.com/kb/en/mariadb-sorting-issue/ _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : [email protected] Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp
